gecko-dev/xpcom/build/Omnijar.cpp

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6.3 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla code.
*
* The Initial Developer of the Original Code is
* Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Michael Wu <mwu@mozilla.com>
* Mike Hommey <mh@glandium.org>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "Omnijar.h"
#include "nsDirectoryService.h"
#include "nsDirectoryServiceDefs.h"
#include "nsIFile.h"
#include "nsZipArchive.h"
#include "nsNetUtil.h"
namespace mozilla {
nsIFile *Omnijar::sPath[2] = { nsnull, nsnull };
nsZipArchive *Omnijar::sReader[2] = { nsnull, nsnull };
bool Omnijar::sInitialized = false;
static bool sIsUnified = false;
static bool sIsNested[2] = { false, false };
static const char *sProp[2] =
{ NS_GRE_DIR, NS_XPCOM_CURRENT_PROCESS_DIR };
#define SPROP(Type) ((Type == mozilla::Omnijar::GRE) ? sProp[GRE] : sProp[APP])
void
Omnijar::CleanUpOne(Type aType)
{
if (sReader[aType]) {
sReader[aType]->CloseArchive();
NS_IF_RELEASE(sReader[aType]);
}
sReader[aType] = nsnull;
NS_IF_RELEASE(sPath[aType]);
}
void
Omnijar::InitOne(nsIFile *aPath, Type aType)
{
nsCOMPtr<nsIFile> file;
if (aPath) {
file = aPath;
} else {
nsCOMPtr<nsIFile> dir;
nsDirectoryService::gService->Get(SPROP(aType), NS_GET_IID(nsIFile), getter_AddRefs(dir));
NS_NAMED_LITERAL_CSTRING (kOmnijarName, NS_STRINGIFY(OMNIJAR_NAME));
if (NS_FAILED(dir->Clone(getter_AddRefs(file))) ||
NS_FAILED(file->AppendNative(kOmnijarName)))
return;
}
bool isFile;
if (NS_FAILED(file->IsFile(&isFile)) || !isFile) {
// If we're not using an omni.jar for GRE, and we don't have an
// omni.jar for APP, check if both directories are the same.
if ((aType == APP) && (!sPath[GRE])) {
nsCOMPtr<nsIFile> greDir, appDir;
bool equals;
nsDirectoryService::gService->Get(SPROP(GRE), NS_GET_IID(nsIFile), getter_AddRefs(greDir));
nsDirectoryService::gService->Get(SPROP(APP), NS_GET_IID(nsIFile), getter_AddRefs(appDir));
if (NS_SUCCEEDED(greDir->Equals(appDir, &equals)) && equals)
sIsUnified = true;
}
return;
}
bool equals;
if ((aType == APP) && (sPath[GRE]) &&
NS_SUCCEEDED(sPath[GRE]->Equals(file, &equals)) && equals) {
// If we're using omni.jar on both GRE and APP and their path
// is the same, we're in the unified case.
sIsUnified = true;
return;
}
nsRefPtr<nsZipArchive> zipReader = new nsZipArchive();
if (NS_FAILED(zipReader->OpenArchive(file))) {
return;
}
nsRefPtr<nsZipHandle> handle;
if (NS_SUCCEEDED(nsZipHandle::Init(zipReader, NS_STRINGIFY(OMNIJAR_NAME), getter_AddRefs(handle)))) {
zipReader = new nsZipArchive();
if (NS_FAILED(zipReader->OpenArchive(handle)))
return;
sIsNested[aType] = true;
}
CleanUpOne(aType);
sReader[aType] = zipReader;
NS_IF_ADDREF(sReader[aType]);
sPath[aType] = file;
NS_IF_ADDREF(sPath[aType]);
}
void
Omnijar::Init(nsIFile *aGrePath, nsIFile *aAppPath)
{
InitOne(aGrePath, GRE);
InitOne(aAppPath, APP);
sInitialized = true;
}
void
Omnijar::CleanUp()
{
CleanUpOne(GRE);
CleanUpOne(APP);
sInitialized = false;
}
already_AddRefed<nsZipArchive>
Omnijar::GetReader(nsIFile *aPath)
{
NS_ABORT_IF_FALSE(IsInitialized(), "Omnijar not initialized");
bool equals;
nsresult rv;
if (sPath[GRE] && !sIsNested[GRE]) {
rv = sPath[GRE]->Equals(aPath, &equals);
if (NS_SUCCEEDED(rv) && equals)
return GetReader(GRE);
}
if (sPath[APP] && !sIsNested[APP]) {
rv = sPath[APP]->Equals(aPath, &equals);
if (NS_SUCCEEDED(rv) && equals)
return GetReader(APP);
}
return nsnull;
}
nsresult
Omnijar::GetURIString(Type aType, nsACString &result)
{
NS_ABORT_IF_FALSE(IsInitialized(), "Omnijar not initialized");
result.Truncate();
// Return an empty string for APP in the unified case.
if ((aType == APP) && sIsUnified) {
return NS_OK;
}
nsCAutoString omniJarSpec;
if (sPath[aType]) {
nsresult rv = NS_GetURLSpecFromActualFile(sPath[aType], omniJarSpec);
NS_ENSURE_SUCCESS(rv, rv);
result = "jar:";
if (sIsNested[aType])
result += "jar:";
result += omniJarSpec;
result += "!";
if (sIsNested[aType])
result += "/" NS_STRINGIFY(OMNIJAR_NAME) "!";
} else {
nsCOMPtr<nsIFile> dir;
nsDirectoryService::gService->Get(SPROP(aType), NS_GET_IID(nsIFile), getter_AddRefs(dir));
nsresult rv = NS_GetURLSpecFromActualFile(dir, result);
NS_ENSURE_SUCCESS(rv, rv);
}
result += "/";
return NS_OK;
}
} /* namespace mozilla */